Do you really believe about it, As I have applied visa for Kazakhstan and went to embassy, Inside the Councillor office they have told me to contact with a specific Travel agent sitting in Blue Area to complete all my document and then said agent will come to embassy for visa, you only need to come just for collection.
Same like this I have got visa for Jordan and it was straight forward for me.
But same as When I got visa for Nigeria they have also send me to another person sitting in Blue Area to fill up all my documents and deposit fee and then agent suppose to come to embassy for visa.
As I believe it varies from embassy to embassy how to get visa so that I have asked you about.